Hurricane Patricia is likely to cause considerable damage to life (human and nonhuman) and property. Below are some links to ways to help.
To register yourself safe and well or search for others the Red Cross have a helpline
To make donations various news sites are compiling lists of charitable organisations engaged in relief efforts (likely overlap on the lists):
A local SPCA has been evacuated and may need help
I will try and add anything which emerges over the next day or two.